Recent advances of mixed-transition-metal-substituted polyoxometalates

Polyoxometalates (POMs) have been emerging as one of the most widely-studied interdisciplinary research fields of inorganic chemistry due to their structural diversities and versatile physicochemical properties. The incorporation of transition metals into lacunary POM ligands can lead to the formation of various transition-metal-substituted POMs (TMSPs) with wide potential applications in research areas including medicine, magnetism, functional materials, catalysis, and energy storage. In this review, we summarized the recent advances of mixed-transition-metal-substituted POMs (Mixed TMSPs) with respect to their synthetic strategies, structural diversities, and relevant applications. Finally, a comprehensive outlook of this research area was also prospected.